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	Structural amelioration of 920 nm optically pumped semiconductor vertical external-cavity surface emitting laser (OPS-VECSEL) (EI CONFERENCE) 会议论文 OAI收割 2nd International Conference on Energy, Environment and Sustainable Development, EESD 2012, October 12, 2012 - October 14, 2012, Jilin, China 作者: Liu Y.; Liu Y.; Wang L.; Wang L.; Wang L. 收藏 \| 浏览/下载：20/0 \| 提交时间：2013/03/25 920 nm optically pumped semiconductor vertical external-cavity surface emitting laser (OPS-VECSEL) has an important application in laser display. We constructed and optimized a 920 nm OPS-VECSEL with active region of In0.09Ga0.91As quantum well (QW) system pumped by 808 nm laser diode module. By the finite element method self-consistent solutions of the semiconductor electronic and optical equations are realized to calculate the characteristics parameters of OPS-VECSEL. The performances of device especially the mode the threshold and the optical-optical translation efficiency were analyzed by dealing with different number of QWs (1 2 and 3) in one period QW depth barrier width the component and dimension of the non-absorption layer. We chose an improved structure of them. On this basis we ameliorated the number of QW periods and the simulation showed that in order to obtain high performance device the choice of the number of QW periods must be cautious. (2013) Trans Tech Publications Switzerland.
	Field-line coupling interference prediction of LCD module in high-power TEA CO2 laser system (EI CONFERENCE) 会议论文 OAI收割 2012 International Conference on Optoelectronics and Microelectronics, ICOM 2012, August 23, 2012 - August 25, 2012, Changchun, China Ge X.; Li X. 收藏 \| 浏览/下载：16/0 \| 提交时间：2013/03/25 In high power TEA CO2 laser system liquid crystal display (LCD) module is a key device for display and control functions. Because of laser's harsh electromagnetic environment LCD module coupled to the electromagnetic interference easily leading to not work normally. This paper analyzed the interference coupling mechanism. On the basis of the analysis results LCD module's field-line coupling is calculated by Taylor form's BLT equation. The calculation result is verified by experiment. The results show that due to the field-line coupling the data line of LCD module existed interference voltage interference voltage value is 1V. The interference voltage is larger than the LCD module's noise margin. LCD module must shield the interference. 2012 IEEE.
	A small thickness measurement system based on PSD and FPGA (EI CONFERENCE) 会议论文 OAI收割 3rd International Conference on Measuring Technology and Mechatronics Automation, ICMTMA 2011, January 6, 2011 - January 7, 2011, Shanghai, China 作者: Guo J.; Guo J.; He X. 收藏 \| 浏览/下载：30/0 \| 提交时间：2013/03/25 Considering that the requirement of industrial manufacture An AT89S51 singlechip works as the core processor of the system. By two laser triangulation a small thickness measurement system based on PSD and FPGA is presented. It takes S3931 PSD of one dimension as position detection device A FPGA produces logic control signals for the whole system the small displacement is converted to differential voltages which is made by Hamamatsu in Japan and after amplification and A/D transformation 8-bit parallel data is send to singlechip from FPGA by external interrupts and the final calculation results output to the LCD display module. After digital micro meter calibration we get the small thickness. Experiments show that the detection accuracy of the system is not less than 10um.
	New phase measurement method for laser rangefinder (EI CONFERENCE) 会议论文 OAI收割 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, April 26, 2010 - April 29, 2010, Dalian, China 作者: Meng Z.; Meng Z. 收藏 \| 浏览/下载：27/0 \| 提交时间：2013/03/25 A new phase measurement method is designed and presented by using the technique of signal shifting phase and the technique of signal multiplication for laser rangefinder. The intensity of laser light is modulated by cosine circuit signal at the same time the cosine circuit signal is thansformed sine signal by the shifting phase technique. Two signals mentioned above are multiplied by received signal from the target respectively then being transmitted into signal processor after passing through low band filter respectively. The result of phase-shift between the received signal and sent signal is calculated by means of signal processor and time-counter with double frequency of modulation signal. The proposed system is composed of four units such as control and count unit emitting and receiving unit of laser light signal processing unit and result display unit. The two most advantages of proposed system over others are its ability of proper isolation which reduces crosstalk and its independency thermal drift. Theoretical calculations and experimental results have shown the accuracy better than 2 mm. 2010 Copyright SPIE - The International Society for Optical Engineering.
	Laser digital cinema projector 期刊论文 iSwitch采集 Journal of display technology, 2008, 卷号: 4, 期号: 3, 页码: 314-318 作者: Zheng, Guang; Wang, B.; Fang, T.; Cheng, H.; Qi, Y. 收藏 \| 浏览/下载：23/0 \| 提交时间：2019/05/10 Laser display technology Laser display system Digital cinema projector Rgb laser
	Color video display technique based on diode-pumped solid state lasers (EI CONFERENCE) 会议论文 OAI收割 ICO20: Lasers and Laser Technologies, August 21, 2005 - August 26, 2005, Changchun, China 作者: Liu H.; Wei Z.-L.; Liu H.; Liu H.; Kang Y.-S. 收藏 \| 浏览/下载：25/0 \| 提交时间：2013/03/25 This paper will introduce the principle and techniques to realize laser color video display. The characteristics of techniques and bottleneck of restricting the development are analyzed. A novel technical approach to eliminating the laser interference improving the uniformity of optical field transforming the chromaticity and extending the virtual color is proposed. The principle device of laser display system has been produced on the basis of the blue green and red diode-pumped solid state lasers. The wavelengths of the blue green and red are respectively 473nm 532nm and 671 nm. The output powers of the lasers are 1.3W 0.32W and 3.5W respectively.